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Finding the Fourth Proportional to 258,229.50, 387,358.83 and 92,017.50

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Solution

The fourth proportional to 258,229.50, 387,358.83 and 92,017.50 is: 138,031.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,229.50 : 387,358.83 = 92,017.50 : x
  2. Step 2: Convert to fraction form
    258,229.50/387,358.83 = 92,017.50/x
  3. Step 3: Cross multiply
    258,229.50x = 387,358.83 × 92,017.50
  4. Step 4: Simplify right side
    258,229.50x = 35,643,791,139.53
  5. Step 5: Solve for x
    x = 35,643,791,139.53/258,229.50
  6. Step 6: Final answer
    x = 138,031.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.